I have found Pseudogoniochloris tripus so far only very sporadically in the Simmelried, often between decomposing plant masses or between accumulations of filamentous algae. The cells of my population were larger with a diameter of about 35 µm than the range of 15–20 µm given by Pascher. Nevertheless, all other characteristics match Pascher’s description, so I assume that the larger cells are within the natural variance. This alga belongs to the yellow-green algae (Xanthophyceae). These differ from the green algae (Chlorococcales) in that they produce the reserve substance chrysolaminarin rather than starch. Under the light microscope, the chloroplasts of the yellow-green algae appear lighter and more yellowish than those of the green algae.